Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=15cba26f42c13ca30cbb4388f132ac0ddf4df538
Commit: 15cba26f42c13ca30cbb4388f132ac0ddf4df538
Parent: 6cff2faaf135b602c914710f3414630c3fc1ee83
Author: Ralph Campbell <[EMAIL PROTECTED]>
AuthorDate: Wed Sep 12 15:00:58 2007 -0700
Committer: Roland Dreier <[EMAIL PROTECTED]>
CommitDate: Tue Oct 9 20:53:50 2007 -0700
IB/ipath: Add ability to set the LMC via the sysfs debugging interface
This patch adds the ability to set the LMC via a sysfs file as if the SM
sent a SubnSet(PortInfo) MAD. It is useful for debugging when no SM is
running.
Signed-off-by: Ralph Campbell <[EMAIL PROTECTED]>
Signed-off-by: Roland Dreier <[EMAIL PROTECTED]>
---
drivers/infiniband/hw/ipath/ipath_sysfs.c | 40 ++++++++++++++++++++++++++++-
1 files changed, 39 insertions(+), 1 deletions(-)
diff --git a/drivers/infiniband/hw/ipath/ipath_sysfs.c
b/drivers/infiniband/hw/ipath/ipath_sysfs.c
index 16238cd..e1ad7cf 100644
--- a/drivers/infiniband/hw/ipath/ipath_sysfs.c
+++ b/drivers/infiniband/hw/ipath/ipath_sysfs.c
@@ -163,6 +163,42 @@ static ssize_t show_boardversion(struct device *dev,
return scnprintf(buf, PAGE_SIZE, "%s", dd->ipath_boardversion);
}
+static ssize_t show_lmc(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct ipath_devdata *dd = dev_get_drvdata(dev);
+
+ return scnprintf(buf, PAGE_SIZE, "%u\n", dd->ipath_lmc);
+}
+
+static ssize_t store_lmc(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ struct ipath_devdata *dd = dev_get_drvdata(dev);
+ u16 lmc = 0;
+ int ret;
+
+ ret = ipath_parse_ushort(buf, &lmc);
+ if (ret < 0)
+ goto invalid;
+
+ if (lmc > 7) {
+ ret = -EINVAL;
+ goto invalid;
+ }
+
+ ipath_set_lid(dd, dd->ipath_lid, lmc);
+
+ goto bail;
+invalid:
+ ipath_dev_err(dd, "attempt to set invalid LMC %u\n", lmc);
+bail:
+ return ret;
+}
+
static ssize_t show_lid(struct device *dev,
struct device_attribute *attr,
char *buf)
@@ -190,7 +226,7 @@ static ssize_t store_lid(struct device *dev,
goto invalid;
}
- ipath_set_lid(dd, lid, 0);
+ ipath_set_lid(dd, lid, dd->ipath_lmc);
goto bail;
invalid:
@@ -648,6 +684,7 @@ static struct attribute_group driver_attr_group = {
};
static DEVICE_ATTR(guid, S_IWUSR | S_IRUGO, show_guid, store_guid);
+static DEVICE_ATTR(lmc, S_IWUSR | S_IRUGO, show_lmc, store_lmc);
static DEVICE_ATTR(lid, S_IWUSR | S_IRUGO, show_lid, store_lid);
static DEVICE_ATTR(link_state, S_IWUSR, NULL, store_link_state);
static DEVICE_ATTR(mlid, S_IWUSR | S_IRUGO, show_mlid, store_mlid);
@@ -667,6 +704,7 @@ static DEVICE_ATTR(logged_errors, S_IRUGO,
show_logged_errs, NULL);
static struct attribute *dev_attributes[] = {
&dev_attr_guid.attr,
+ &dev_attr_lmc.attr,
&dev_attr_lid.attr,
&dev_attr_link_state.attr,
&dev_attr_mlid.attr,
-
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